Portion of a shank for a ring



FIG. 1 is a front isometric view of a portion of a shank for a ring showing my new design, the broken lines throughout the drawings are for illustrative purposes only and form no part of the claim;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

I claim the ornamental design for a portion of a shank for a ring, as shown and described. 